Un beau rêve = a beatiful dream / a nice dream, a sweet dream.
beau reve but with a circumflex over the e in reve.
(I wish you) sweet dreams
Sweet dreams and hope to see you soon
It should be 'beau rêve' or even more more usual is the plural - 'beaux rêves', as in English. It means good (or sweet) dream.
un rêve - a dream
"Dream on, dreamer"
It means "the dream".
In the middle of a dream.
"I dream of you" Literally: of you i dream
the girlfriend of my dreams
= = doux rêves =sweet dreams
Un rêve (masc.) is a dream in French.